Last month marked 20 years since Beavis and Butthead debuted on MTV. But with that anniversary came the news that the show won't be seen there anymore.

Fans have been petitioning for Comedy Central to pick it up. But if they do they might want to keep in mind the show's controversial history. After all, MTV made changes to a bunch of episodes after they aired and became reruns -- some were even taken out of circulation entirely. Here they are!

This past weekend at New York Comic-Con, Beavis and Butt-Head creator Mike Judge presented the inaugural public screening of his classic animation's rebooted first episode. Chris Linn, MTV Executive Vice President of MTV Production, introduced the pilot. Luke Wilson, Judge's friend who starred in the director's feature-film cult spoof Idiocracy, "moderated" a post-viewing panel discussion. This meant the affable Wilson asked his pal a few questions Wikipedia could've answered ("You were an engineer, right?") and then subjected himself, along with Judge, to an audience-commandeered Q&A, one of those rare moments when a big-shot film actor sits unarmed without a mediating publicist. (Consequently, Wilson not only allowed an excitable young woman to pet his head, but also got asked if he or his brother Owen got "better trim," a question he politely rebuffed.)

But Wilson was just a high-wattage prop ("I don't even know what I'm doing here," he admitted). The real stars were those walking teen-boy devil-horns from Highland, Texas, who, as you've surely heard, will be insulting MTV's own reality programming along with music videos. Perhaps unsurprisinglygiven the low-hanging fruit of Jersey Shore and 16 and Pregnantthe 2011 pilot is hilarious. Here's what else we learned from the panel.

Yesterday 60 Minutes curmudgeon Andy Rooney announced that he would be retiring from his weekly segment of wondering about the annoying things in life. Here is a clip from Beavis And Butt-Head where the two imminently returning couch potatoes do their best "Mickey" Rooney impersonations over "Funk Dat," the safe-for-TV Rooney tribute track by the Baltimore MC Sagat. It's funny! Certainly it's funnier than the comments Rooney made after the death of Kurt Cobain, which Rooney said attracted more than 10,000 letters from "young people" because they boiled down to "Cobain? Never heard of him. What an idiot." It's almost like his segment was a prototype for really lousy blogs!

MTV turns 30 on Monday. To celebrate, we're running a bunch of pieces on the channel, its legacy, and its future.

You may have heard by now that Beavis and Butt-Head are returning to MTVa real comeback after years of cruel teasing rumors, none of them particularly believable. Mike Judge announced the show's comeback at this year's San Diego Comic-Con, and MTV released the above clip of new footage in tandem with the announcement.

In a lot of ways, that clip seems like it could have come straight from Beavis and Butt-Head's '90s heyday: bloody mayhem, charming stupidity, Cornholio. But it also came with one crucial difference. When it came time for the duo's much-beloved mocking of music videos, B&B started ripping into... Snooki and Jersey Shore.